Demountable oil-immersed tube



May 16, 1933- J. B. wANTz 1,909,322

DEMOUNTABLE OIL IMMERSED TUBE Filed March, 19, 1928 EM. WZ 1 m ZU I FIQZ v v v v A l A n Ll l l l u u v xe/ zz Llllll llllll I I I I I I I lNVENTOR JULWE: WRNTZ A TOKNEY Patented May 16, 1933 Nrrsu STATES PA'IENT vclarifie- JULIUS B. WANTZ, F OAK PARILILLINOIS, ASSIGNOR TO GENERAL ELECTRIC X-RAY 'CORPORATION, CHICAGO, ILLINOIS, A CORPORATION OF VNEW YORK DEMOUNTABLE OIL-IMMERSED TUBE Application filed March 19,

The present invention relates particularly to insulation againstv high tension electromotive force and a means for mounting a tube, so insulated, has particularly to do with a means for making quick changes of tubes provided with oil insulation or the like.

Two embodiments are discussed in the fol-V lowing description of the invention, but such applications of the novel ideas thereof are but two of the many uses to which the invention may be put. l

Included in the objects of the invention are the following:

Means for mounting and ldismounting oilimmersed tub-es Aso that a minimum amount of sealing is necessary;

Increased facility in obtaining access to oil-immersed tubes and in making changes of .20 the tubes so immersed;

Contact means of a novel character adapted to automatically function as an incident to the positioning 'of a tube in a mountingthere'- for; and a A novel container means for oil-immersed apparatus. l

These, and such other objects which may hereinafter appear, are obtained by the novel construction and combination of parts and by their arrangement.

A single mechanical embodiment of the invention and two electrical arrangements thereof are illustrated in the accompanying single sheet of drawing, in which:

Figure 1 is a vertical transverse section transparent to any X-light.

4in connection with such a tube.

1928. Serial N'o. 262,607.

connections thereony taken on the line 5-5 of Figure 2.

Like reference characters are used to designate similarv parts in the drawing and in the description which follows.

A tank 10 of any suitable shape is provided. The bottom and sides thereof are generally integral to avoid the possibility of leakage from improper joinder. The sides or bottom or any of thenimay be ribbed, vaned, or fluted to provide radiation for dispersing the heat generated within the tank 10.

To close the tank 10, a main cover 11 is provided. This may lhave fins to aid in radiation when itis so desired. The cover 11 is tightly sealed upon tank in any manner well known in the art.

Said` covery 11 has an aperturetherein which aperture is sealed by anV Iauxiliary cover 12 which Vcover provides a: window Intermediate covers 11 and 12 is a gasket 13 whereby a tight seal therebetween is secured when the latter Vis attached to the former by screws; as shown, or by other suitable fastening means.

Secured to cover 12 is a baseboard 14 which in reality is the tube holder.V Upon said baseboard 14 and suitably spaced apart are two tube supports 15 and 16, which will'hereinafter be referred to as the upper and lower holders. i

Upon the holder 15 is a cap 17 having as a part thereof two contacts` which are electrically connected to the leads to the filament in an X-ray tube when the device is employed Said contacts are adapted to be engaged by other contacts later to be described whereby to establish a circuit to the filament .of the tube in the tank. One side ofthe circuit from the high tension transformer to the cathode of the tube is electrically Vconnected to said Y tube through one of said contacts which contacts are best shown in Figure 5. Y

The cap adapted to be used uponl the lower holder 16 is designated 1 8 and resembles cap 17 except that there are no contacts thereon. Upon each side of the tube board or holder 14 are slides 19 which are secured to the main cover 11 of the tank 10 by means of the brackets shown in Figure 1. Slides 19 provide tracks for the baseboard 14 and aline said baseboard against said wall in tank 10 as is shown in Figure 1. Baseboard 14 has a sub-cover 12 heretofore described and which is braced tobaseboard 14 in any suitable manner.

The vacuum tube employed, whether it be an X-ray tube, a kenotron, or any other type of tube, is designated 20. 1t is secured between the upper and lower holders 15 and 16 and the caps 17 and 18 therefor.

From the lower holder 16 depends an anode support 21 which member comprises a ring contact portion adapted to closely surround and impinge the periphery of the anode of tube 20. Two nuts 22, as shown, may be used upon support 21 to secure it to holder 16, or other suitable fastening means may be substituted.

Adapted to be electrically connected with the anode of tube 20 when the latter is inserted into support 21 is a spring contact 23 which has a U-shaped portion and a contact part adapted to impinge the anode support 21. Said cont-act 23 is held in the tank 10 by a support 24, said contact 23 being adapted to establish a high tension circuit with the anode of tube 20 when the vacuum tube is properly positioned.

Secured to the contacts upon cap 17 are two L-shaped contacts 25 which contacts are adapted to project outwardly to impinge upon stationary contacts 26 firmly mounted in tank 10 but which possess sufficient flexibility when impinged by contacts 25 as an incident to closing cover 12 over cover 11, to compensate for differences in the position of cover 12 but at all times tov establish a firm connection.

The contacts 26 are secured upon a supl port 27 Through said contacts 26 and 25 electrical connection for the filament of the tube 20 is secured, and as has already been indicated, one of said contacts 25 and 26 is employed for completing the circuit from the high tension transformer across the tube cathode 29 and the anode 28 thereof.

Within the tank 10 is a high tension transformer 30 and a filament current transformer 31. When it is thought desirable these devices may be separately mounted and the demountable tube holder applied to a tank for a tube only.

For regulating the electromotive force impressed upon the filament and across the anode 28 and cathode 29, regulators 33 and 32, respectively, are employed.

Reference should be had to the diagrammatic representation of an X-ray circuit in Figure 3. In addition to the parts hereinabove referred to is an on-and-off switch 34. A source of power is represented at 35.

No difiiculty will be had in tracing the flow of current in the circuits disclosed, one for the high tension, and the other for heating the filament in the cathode 29.

In Figure 4, the circuit for the kenotron rectification is apparent, and added thereto is a symbolic representation 36 of a load. The circuit otherwise is substantially identical with the circuit disclosed in Figure 3.

It is manifest that the present invention is adapted to provide a ready means for changing a tube in an oil-filled insulation tank. As an incident to the closing of the tank 10 through the agency of auxiliary cover 12, the tube 20 secured upon said cover 12 is forced into electrical connection with the circuits for energizing such tube. As the cover 12 is released from the tank 10 and lifted therefrom, the electrical connections are broken. f

Manifestly the apparatus greatly facilitates changing of tubes, and does away with the present cumbersome method of removing the entire cover from a tank and disconnecting the various parts therein from their permanent mechanical mountings and electrical connections.

By the employment of the slides 19 into which the board 14 is adapted to beinserted, the alignment of the tube with the various contacts hereinabove described is assured, and it is made certain that the tube will occupy its proper position within the tank.

As previously indicated, sealing of the tank after the insertion of a tube is a relatively simple matter and the operation of sealing is confined to a part of the device having the most reduced margin possible. In other devices for oil-immersion, it is necessary to seal the entire cover which cover is generally Cao-extensive with the largest dimensions of the tank itself. l

The fsection of the cover forming a part of the demountable or removable tube holder may comprise, as a whole or in part, material transparent to X-light. If it is thought advisable, the portion of the cover through which X-light passes may be reduced in sections so as to reduce absorption of the radiation in the cover.

I claim:

1. X-ray tube holding apparatus comprising a ltank for the immersion of a tube, an insulating liquid in said tank, contacts in said tank, a tube holder detachably secured to said tank, contacts on said tube holder, and a tube mounted on said tube holder, the lcontacts on said holder being electrically connected to said tube and engaging the contacts in said tank.

2. X-ray tube holding apparatus comprising a tank for the immersion of a tube, guiding members and contact members in said tank, a holder for a tube mounted for movement upon said guiding members, a tube supported on said holder, and contact members on said holder electrically connected to said ing liquid in saidtank, a tube,

tube and complemental to the Contact members in said tank, said tank having an insulation liquid content therein covering said tube and said contact members.

3. Tube holding apparatus as described in claim 2, and in which said tank has two closure members, one of which members supports said holder.

4. Tube holding apparatus as described in claim 2, and in which said tank has a sectional cover, and said holder is supported by one of the sections of said cover.

5. Tube holding apparatus comprising a tank for the immersion of a tube, an insulating liquid in said tank, guiding members in said tank, stationary electrical contacts in said tank for electrical connection with tube energizing apparatus, a tube, a yholder for said tube having contacts connected to said tube and adapted to engage said stationary contacts when said holder is in said tank, and tube gripping members on said holder and supporting the contact members thereon, said holder being mounted for movement in said guiding members.

6. Tube holding apparatus comprising a tank for the immersion of a tube, an insulata tube holder detachably secured to said tank and holding said tube spaced from but enclosed 'by said tank, electrical contacts in said tank, and other contacts on said holder, the contacts in said tank and the contacts on said holder being complemental and providing electrical connection between said stationary contacts and said tube after said holder has been inserted into a selected position in said tank.

7. Tube holding apparatus comprising a tank for the immersion ot a tube, an insulating liquid in said tank, a tube, a cover for said tank, a tube holder detachably secured to said cover and holding said tube spaced from said cover but enclosed by said tank, electrical contacts in said tank, and other contacts on said holder, the contacts on said holder and the contacts in said tank being complemental and providing electrical connections between the contacts in said tank and said tube after said holder has been inserted into a selectedy position in said tank.

8. Tube holding apparatus comprising a tank for the immersion of a tube, an insulating liquid in said tank, a tube, a cover for said tank, a secondary cover detachably secured thereto, a tube holder on said secondary cover and arranged to hold said tube spaced from lbut enclosed by said tank, electrical contacts in said tank, and other contacts on said holder, the contacts in said tank and the contacts on said holder being complemental and providing electrical connections between the contacts in said tank and said tube after said tube and tube holder have been inserted into a selected position in said tank.

9. Tube holding apparatus comprising a tank for the immersion of a tube, an insulating liquid in said tank, a tube, a main cover for said tank, a secondary cover detachably secured to said main cover, said secondary cover being transparent to X-light, a tube holder secured to said secondary cover to hold said tube spaced from but enclosed by said tank, contacts in said tank, and other contacts on said holder, the contacts on said holder being complemental to the contacts in said tank and providing electricalconnection between the contacts in said tank and said tube when said holder is inserted into said tank a predetermined distance,

'JULIUS B. WANTZ. 

